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  <title>Document</title>
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    <script>
      const arr = [
        {id:1,name:'西瓜',state:true},
        {id:2,name:'苹果',state:true},
        {id:3,name:'草莓',state:true},
      ]
      //需求，判断数组中，水果是否被全选了
      let result = arr.every(item => item.state)
      console.log(result);
    </script>
</body>
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